TY  - JOUR
AU  - P. E. Pushkar'
TI  - Generalization of the Chekanov Theorem. Diameters of Immersed Manifolds and Wave Fronts
JO  - Informatics and Automation
PY  - 1998
SP  - 289
EP  - 304
VL  - 221
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1998_221_a17/
LA  - ru
ID  - TRSPY_1998_221_a17
ER  -